Apple ID
I sighs with my alpple ID on my new iPhone pro 11 max last night and it’s still running but it doesn’t work.
iPhone 4s, iOS 9
Question marked as
It hasn't completed the sign in? If that isn't the problem, more information would help.
Do you have access to another WiFi network where you can try? That has worked for several people.
Try a restart.
Restart your iPhone, iPad, or iPod touch https://support.apple.com/en-us/HT201559
Try a forced restart.
Reset Device. https://support.apple.com/en-us/HT201252
If necessary
Hard reset. https://www.wikihow.com/Hard-Reset-an-iPhone
Do a backup and try a factory reset. Then restore from your backup.
Restore to Factory setting. https://support.apple.com/en-us/HT204184
Backup - Restore your device from an iCloud or iTunes backup. https://support.apple.com/en-us/HT204184